DASS-42: Depression Anxiety Stress Scales, 42-item version

What this assessment is

The DASS-42 reports three separate 0-to-42 scores for depression, anxiety, and tension or stress over the past week. Higher scores reflect more reported symptoms in that area. The scale describes symptom dimensions rather than diagnosing a disorder. Unlike DASS-21, the full version's scale sums are not doubled.

The three scale scores are the standard outputs, and they are not interchangeable. If a protocol also reports a composite, it should state how the three scores were standardized or combined.

The DASS-42 is the full version. The DASS-21 is its shorter form and uses a different scoring step.

Who it was designed for

The standard DASS was developed for adults. If it is used with adolescents or another population, the evidence used to interpret the scores should match that group.

Evidence from one age group, language, or setting should not automatically be applied to another. When someone is seeking help or reports high distress, a qualified health professional should interpret the result in the context of symptoms, functioning, and safety.

How it is administered

The standard form asks about experiences during the past week. It uses four response levels across 42 statements.

The respondent completes the measure. A change to the recall period creates a result that is not directly comparable with standard DASS data unless that use has its own evidence.

Record the timeframe and version whenever results are compared.

What it measures

The DASS-42 separates distress into three related scales:

• Depression covers low positive feeling, reduced motivation, and a negative view of life or self.
• Anxiety covers physical arousal, situational anxiety, and fear-related experiences.
• Stress covers tension, irritability, impatience, and difficulty relaxing.

The scales overlap, so a person can score high on more than one. The pattern across all three scores is more informative than one label alone.

How scoring works

Each scale contains 14 items. A published DASS-42 methods description confirms that responses contribute 0 to 3 points, so each scale runs from 0 to 42. Higher scores indicate more reported symptoms in that area.

Add the responses assigned to each scale. DASS-42 scores are not multiplied.

An American Thoracic Society outcome-measure summary also distinguishes the 21-item form from the original 42-item version. DASS-21 uses seven items per scale, and its three scale sums are multiplied by two when compared with full DASS scores or norms.

A report should always name the version because the same-looking number can otherwise be misread.

Do not silently treat a missing response as zero. A study or service should define its missing-data method in advance, label an averaged result separately from a complete 0-to-42 sum, and report the method used.

How to interpret DASS-42 scores

Read the depression, anxiety, and stress scores separately. A higher number means that the respondent reported more symptoms in that domain during the recall period.

There is no universal diagnostic cutoff. The developer describes the manual's severity labels as conventional and partly arbitrary. A label such as mild refers to position in a reference population, not a mild disorder.

The official manual contains the reference bands. If a report uses them, it should identify the manual, population, language, and version used. A score near a boundary should not be treated as categorically different from a score just across it.

What the score cannot tell you

The DASS-42 cannot diagnose depression, an anxiety disorder, or another condition, establish why symptoms are present, or decide which treatment is appropriate.

Nor does it replace a clinical interview, a review of daily functioning, or a separate safety assessment, because physical health, medication, recent events, culture, and language can all affect the context of a result.

Use the scores as part of a wider assessment. Repeated scores are most useful when the same version, timeframe, language, and scoring method are kept consistent.

Evidence and limitations

The original development study supported the three-scale structure in a nonclinical sample of 717 people. A later clinical-sample study found a closely matching structure in samples of 437 and 241 people.

Those findings do not make one set of score labels universal. The DASS can describe a three-scale profile or change over time when the same version, timeframe, language, and scoring method are retained.